η and η′ transition form factors from Padé approximants

We employ a systematic and model-independent method to extract, from space- and time-like data, the and 0 transition form factors (TFFs) obtaining the most precise determination for their low-energy parameters and discuss the ! impact on them. Using TFF data alone, we also extract the 0 mixing parameters, which are compatible to those obtained from more sophisticated and input-demanding procedures.